MESON Chess Problem Database
Problem Display
PID: 264401 (5q2/5B2/4r3/n6Q/1Pk1NRn1/7R/P2P4/B3K3 w - - 0 1)
Cristoffanini, Guido
L'Echiquier, 1928
#2
10 + 5
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qxb4
- 2.Bxe6#
- 1...Qc5
- 2.Qxc5#
- 1...Qh6
- 2.Qc5#
- 1...Qg7
- 2.Qc5#
- 1...Qxf7
- 2.Qc5#
- 1...Qa8
- 2.Qc5#
- 1...Qb8
- 2.Qc5#
- 1...Qd8
- 2.Qc5#
- 1...Qe8
- 2.Qc5#
- 1...Qg8
- 2.Qc5#
- 1...Qh8
- 2.Qc5#
- 1...Se3
- 2.Sf2#
- 1...Se5
- 2.Sc3#
- 1...Qxb4
- Tries
- 1.Re3?
- threat
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sd6#
- 2.Sf6#
- 1...Qxf7
- 2.Sd6#
- 2.Qc5#
- 1...Sxe3
- 2.Sf2#
- 1...Qc5
- 2.Sd6#
- 2.Qxc5#
- 1...Se5
- 2.Sc3#
- 1...Qd6
- 2.Sxd6#
- 1...Qh6
- 2.Sd6#
- 2.Qc5#
- 1...Qg7
- 2.Sd6#
- 2.Sf6#
- 2.Qc5#
- 1...Qa8
- 2.Sd6#
- 2.Qc5#
- 1...Qb8
- 2.Sd6#
- 2.Qc5#
- 1...Qd8
- 2.Sd6#
- 2.Qc5#
- 1...Qh8
- 2.Sd6#
- 2.Sf6#
- 2.Qc5#
- 1...Sf2
- 2.Sxf2#
- 2.Sd6#
- 1...Sf6
- 2.Sd6#
- 2.Sxf6#
- 1...Sb3
- 2.Sd6#
- 1...Sc6
- 2.Sd6#
- 1...Kxb4!
- threat
- 1.Qxa5?
- threat
- 2.Bxe6#
- 2.d3#
- 1...Qxb4
- 2.Bxe6#
- 1...Qxf7
- 2.Qc5#
- 2.d3#
- 1...Qc5
- 2.Qxc5#
- 1...Se3
- 2.Sf2#
- 1...Qh6
- 2.Qc5#
- 2.d3#
- 1...Qe7
- 2.d3#
- 1...Qa8
- 2.Qc5#
- 2.d3#
- 1...Qc8
- 2.d3#
- 1...Qd8
- 2.Qc5#
- 1...Qe8
- 2.Qc5#
- 2.d3#
- 1...Qg8
- 2.Qc5#
- 2.d3#
- 1...Sf2
- 2.Bxe6#
- 1...Se5
- 2.Sf2#
- 2.Sc3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Bxe6#
- 1...Sf6
- 2.d3#
- 1...Qd6!
- threat
- 1.Qe5?
- threat
- 2.Sf2#
- 2.Sc3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Qxf7
- 2.Sd6#
- 2.Sf6#
- 2.Qc5#
- 1...Sxe5
- 2.Sc3#
- 1...Qc5
- 2.Sd6#
- 2.Qxc5#
- 1...Se3
- 2.Sf2#
- 1...Qd6
- 2.Sxd6#
- 1...Qh6
- 2.Sg5#
- 2.Sd6#
- 2.Qc5#
- 1...Qa8
- 2.Sd6#
- 2.Qc5#
- 1...Qd8
- 2.Sd6#
- 2.Qc5#
- 1...Sf2
- 2.Sxf2#
- 2.Sd6#
- 1...Sf6
- 2.Sd6#
- 2.Sxf6#
- 1...Sb3
- 2.Sd6#
- 1...Sc6
- 2.Sd6#
- 1...Kxb4!
- threat
- 1.Re3?
- Keys
- 1.a4!
- threat
- 2.Qb5#
- 1...Kxb4
- 2.Qb5#
- 1...Qxb4
- 2.Bxe6#
- 1...Se3
- 2.Sc5#
- 1...Se5
- 2.Sf6#
- 1...Qc5
- 2.Qxc5#
- 1...Qb8
- 2.Qc5#
- 1...Qe8
- 2.Qc5#
- threat
- 1.a4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(e);P_PINP(D),SBLOCK,XP(F)::B(J),XR(d)
- Q(e);N_GUARD::QAR1(I),XQ(e)
- Q(e);N_GUARD::QAR1(I)
- Q(e);N_GUARD,N_SPINR(d),XB(J)::QAR1(I)
- S(b);N_PINS(G)::R(H)+S(G)
- Tries
- Try
- R(E);N_SPINS(G)
- Threat
- DUALS(5)
- Vars
- S(b);XR(E)::R(H)+S(G)
- S(b);::R(H)+S(G)
- Q(e);::R(H)+S(G),DCHECK,XQ(e)
- S(c);::R(H)+S(G),DCHECK
- Refutation
- K(a);N_SPINR(d),P-FLIGHT,XP(F)
- Try
- Q(I);XS(c)
- Threat
- DUALS(2)
- Vars
- Q(e);P_PINP(D),XP(F)::B(J),XR(d)
- Q(e);N_GUARD::QAR1(I),XQ(e)
- S(b);N_PINS(G)::R(H)+S(G)
- Q(e);::P(D)
- Q(e);N_GUARD::QAR1(I)
- S(b);::B(J),XR(d)
- S(b);::P(D)
- Refutation
- Q(e);
- Try
- Q(I);N_SPINS(G)
- Threat
- DUALS(5)
- Vars
- S(b);XQ(I)::R(H)+S(G)
- S(b);::R(H)+S(G)
- Q(e);::R(H)+S(G),DCHECK,XQ(e)
- S(c);::R(H)+S(G),DCHECK
- Refutation
- K(a);N_SPINR(d),P-FLIGHT,XP(F)
- Try
- Actual
- P(C);
- Threat
- QAB1(I)
- Vars
- K(a);N_SPINR(d),P-FLIGHT,XP(F)::QAR1(I)
- Q(e);P_PINP(D),SBLOCK,XP(F)::B(J),XR(d)
- S(b);N_PINS(G)::R(H)+S(G)
- Q(e);N_GUARD::QAR1(I),XQ(e)
- Q(e);N_GUARD::QAR1(I)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).